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Finding the Fourth Proportional to 317,912.38, 475,697.31 and 191,626.90

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Solution

The fourth proportional to 317,912.38, 475,697.31 and 191,626.90 is: 286,734.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,912.38 : 475,697.31 = 191,626.90 : x
  2. Step 2: Convert to fraction form
    317,912.38/475,697.31 = 191,626.90/x
  3. Step 3: Cross multiply
    317,912.38x = 475,697.31 × 191,626.90
  4. Step 4: Simplify right side
    317,912.38x = 91,156,400,853.64
  5. Step 5: Solve for x
    x = 91,156,400,853.64/317,912.38
  6. Step 6: Final answer
    x = 286,734.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.